<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
		    <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
	</view>
</template>

<script>
  import {mapState, mapMutations, mapGetters} from 'vuex'
  
	export default {
		data() {
			return {
				goods_info: {},
        // 左侧按钮组的配置对象
        options: [{
          icon: 'shop',
          text: '店铺'
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        // 右侧按钮组的配置对象
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
			};
		},
    computed:{
      ...mapState('m_cart', []),
      ...mapGetters('m_cart', ['total'])
    },
    watch:{
      // total(newVal){
      //   const findResult = this.options.find(x => x.text === '购物车')
      //   if(findResult){
      //     findResult.info = newVal
      //   }
      // }
      total: {
        handler(newVal){
          const findResult = this.options.find(x => x.text === '购物车')
          if(findResult){
            findResult.info = newVal
          }
        },
        immediate: true
      }
    },
    onLoad(options){
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart', ['addToCart']),
      async getGoodsDetail(goods_id){
        const {data: res} = await uni.$http.get('/api/public/v1/goods/detail', {goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
        
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, ' <img style="display:block;" ').replace(/webp/g, 'jpg')
        
        this.goods_info = res.message
      },
      preview(i){
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e){
        if(e.content.text === '购物车'){
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        if(e.content.text === '加入购物车'){
          // 组织商品的信息对象
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true
          }
          // 调用 addToCart
          this.addToCart(goods)
        }
      }
    }
	}
</script>

<style lang="scss">
swiper{
  height: 750rpx;
  
  image{
    height: 100%;
    width: 100%;
  }
}

.goods-info-box{
  padding: 10px;
  padding-right: 0;
  
  .price{
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #EFEFEF;
      color: gray;
    }
  }
  
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}

.goods_nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}

.goods-detail-container{
  padding-bottom: 50px;
}
</style>
